Panic with GENERIC from today

[Derek Tattersall]

* Bill Paul <wpaul at FreeBSD.ORG> [051107 06:13]:
> > An i386 GENERIC kernel with an ndisgen'd wrapper for bcmwl5_sys driver
> > for a Linksys WPC54G panics as it attempts to DHCP.  The back trace
> > reads (hand transcribed):
> > kdb_enter (c08y0b30) at kdb_enter + 0x2b
> > panic(c08773ef,c082441,0,d52bb944,c07daf6) at panic+0x127
> > mb_free_ext(c3737e00) at mb_free_ext +0x185
> > m_freem(c3737e00,c34d5cf8,0,c34e2800,c3737e00) at m_freem + 0x1a
> > ndis_rxeof(c34ec200,d511b9e8,1,c34fc7d4,d51bbb7e) at ndis_rxeof + 0xb9
> > _end(c3785414,0,c34fc7d4,c34fc000,c34fc7d4)at 0xc333dd61
> > BCMWL5_SYS_drv_data_start(c3652228,17,7a171200,d51bf098,0) at 0xc09ba8bb
> > BCMWL5_SYS_drv_data_start() at BCMWL5_SYS_drv_data_start + 0x3110
> 
> You know, I'm constantly amazed just how many ways people find to
> mess up a simple thing like sending in a bug report. You went to
> so much trouble to emphasize that your system panicked, and you were
> dilligent enough to copy down the stack trace.
> 
> And then you went and forgot to tell us what the panic message said.

Oops!  Message is:
NDIS0 Link state changed to Up
panic mb_free_ext: unknown ext type
CPUID = 0

> 
> Go back and repeat the crash and make a note of the actual panic
> message this time (i.e. "panic: something bad happened!"). Please
> note that "I don't remember" or "I'll get around to it later" are
> not valid responses.
>  
> > A GENERIC kernel from a week ago with an ndisgen'd wrapper for the
> > same driver works fine.
> > 
> > Di I cvsup in the middle of a commit?  I noticed Bill had committed
> > some changes to the NDIS later later this afternoon, but they appeared
> > to be for an intel driver.
> 
> More than likely this is the result of Andre's recent changes to
> the mbuf code. The NDISulator is still working fine for me with 6.x.
> 
> When you report the full panic message so that I can tell what
> actually went wrong, I may be able to tell you more.
> 
> -Bill
> 
> --
> =============================================================================
> -Bill Paul            (510) 749-2329 | Senior Engineer, Master of Unix-Fu
>                  wpaul at windriver.com | Wind River Systems
> =============================================================================
>               <adamw> you're just BEGGING to face the moose
> =============================================================================

Thanks for looking at this.

-- 
Best regards,
Derek Tattersall
dlt at mebtel.net		dlt666 at yahoo.com		 dtatters at gmail.com